INDIANAPOLIS -- Speed took center stage Sunday as combine invitees again took aim at Chris Johnson's 40-yard record of 4.24 seconds set in 2008.

The morning began with Marquise Goodwin of Texas and West Virginia's Tavon Austin clocking unofficial times of 4.25 in back-to-back sprints. But their official times soon were changed -- to 4.27 for Goodwin and 4.34 for Austin.

But hours later, Auburn running back Onterrio McCalebb blazed to an unofficial time of 4.21. Again, Johnson's treasured status as the combine's fastest sprinter ever was in jeopardy. But McCalebb's official time was 4.34, which meant Johnson's record was still safe.

The only thing Georgia's Jarvis Jones needed was exactly what he got. The outside linebacker is widely considered the top pass rusher in the draft, but concerns over his neck (specifically, spinal stenosis) have given some NFL teams pause. But ESPN's Chris Mortensen reported Sunday that Jones, whom the Jets could target in April, received a "favorable review" from Dr. Craig Brigham, a neck and spine specialist.

"I got MRIs," Jones said Saturday. "Had different teams pulling on me, jerking on me, asking me questions. Just going through that all day long."

Jones, who made 24.5 tackles for a loss, 14.5 sacks and seven forced fumbles in 2012, chose not to participate in any of the combine drills. Instead, he'll work out during Georgia's pro day on March 21.

"Our main focus was to come here and visit with all the doctors so all the doctors can see me," Jones said. "Take all the tests I can that they needed me to take so that they can see that I'm healthy."

Maysonet lifts but doesn't sprint

As planned, running back Miguel Maysonet didn't run the 40-yard dash because of a recent hamstring injury. The former Stony Brook standout did show off his strength Sunday, bench pressing 225 pounds 20 times.

Maysonet, runner-up for the Walter Payton Award as Football Championship Subdivision Player of the Year, will do the 40 at his pro day March 21 at Stony Brook.